Conductive part, support and processing box

Abstract

The utility model relates to the technical field of printing supplies, in particular to a conductive piece, a support and a processing box. The conductive part is detachably mounted in the processing box through a bracket, and comprises a conductive part main body and a conductive part, the first contact part extends from the conductive piece main body along a first direction and is in contact with a powder feeding roller; a second contact portion extending in a first direction from a first end of the conductive member main body to contact a developing roller; the third contact part extends from the conductive piece main body to the second end along the first direction and is in contact with a scraper; wherein the first contact part, the second contact part and the third contact part are integrally formed. By means of the first contact part, the second contact part and the third contact part which are integrally arranged, an assembling worker can conveniently and rapidly install the conductive part on the support, the conductive part is installed at a proper position through the multiple installation parts, the situation of wrong installation or neglected installation can be prevented, and positioning is accurate.

Description

Technical Field

[0001] The utility model relates to the technical field of printing consumables, in particular to a conductive part, a bracket and a processing box. Background Art

[0002] A processing cartridge is a consumable device that provides developer to an image forming device. Generally speaking, a processing cartridge includes a photosensitive drum, a powder feed roller, a developing roller and other structures. These structures can cooperate to deliver the developer in the processing cartridge to a designated position in the image forming device when the image forming device is working, so as to enable the image forming device to operate normally.

[0003] In most cases, the components of the process cartridge, including the photosensitive drum, powder feed roller, and developing roller, all require electrical operation. For example, the photosensitive drum needs to be charged to form an electric charge that attracts oppositely charged particles to the drum surface, completing the electrostatic imaging principle. The powder feed roller also needs to be charged to attach the developer to the photosensitive drum, thereby developing the latent image. However, since the electrostatic imaging process requires a large current, the process cartridge is small and cannot be equipped with a corresponding power supply. Moreover, the process cartridge is a consumable item that needs to be replaced with the number of prints. Therefore, it is not practical to install a power supply inside the process cartridge to supply components such as the photosensitive drum, powder feed roller, and developing roller.

[0004] In the prior art, a conductive member is usually provided on the side of the processing box, one end of which is connected to the photosensitive drum, powder feed roller, and developing roller, and the other end is exposed on the side of the processing box. When the processing box is installed on the image forming device, the conductive member is contacted through the electrical contacts of the image forming device, thereby charging the photosensitive drum, powder feed roller, and developing roller.

[0005] However, in the conventional process box, the components in the process box (such as the photosensitive drum, the powder feeding roller, and the developing roller) need to be provided with conductive sheets for circuit conduction, which leads to many problems during installation. Figure 1 As shown, the conductive sheet 14 for electrically connecting to the developing roller 11, the conductive sheet 18 for electrically connecting to the developing roller 5, and the conductive sheet 24 for electrically connecting to the powder discharging knife 21 all need to be installed separately on the bracket of the processing box to receive the voltage supplied by the printer in order to work properly. However, since the three conductive sheets 14, 18, and 24 have similar shapes and structures, assemblers are often easily confused during installation, and the installation steps are relatively complicated. In particular, it is even more difficult for new assemblers with insufficient experience to clearly identify the three conductive sheets 14, 18, and 24. This will lead to incorrect installation or missing installation, which in turn reduces the product yield. At the same time, since the three conductive sheets have special structures with different shapes, it is not easy to control their costs during processing and manufacturing, resulting in a relatively high cost of the processing box. Utility Model Content

[0006] Compared with the existing processing box, the conductive member, bracket and processing box provided by the embodiment of the present invention can be quickly installed on the bracket to complete the positioning, which can prevent the occurrence of wrong installation or missing installation.

[0007] An embodiment of the present utility model provides a conductive part, which can be detachably installed in a processing box through a bracket, and the conductive part includes: a conductive part main body; a first contact part, which extends from the conductive part main body along a first direction and contacts a powder feeding roller; a second contact part, which extends from the first end of the conductive part main body along the first direction and contacts a developing roller; a third contact part, which extends from the conductive part main body to the second end along the first direction and contacts a scraper; wherein the first contact part, the second contact part and the third contact part are integrally formed.

[0008] Furthermore, the first contact portion is in contact with the powder feeding roller in a circumferential direction, and the second contact portion is in contact with the developing roller in a circumferential direction.

[0009] Furthermore, the contact portion of the first contact portion contacting the powder feeding roller forms a first angle with the first direction, and the contact portion of the second contact portion contacting the developing roller forms a second angle with the first direction.

[0010] Furthermore, the first angle and the second angle are both 70 to 85 degrees.

[0011] Furthermore, the outer end surface of the contact portion of the first contact portion contacts the circumferential surface of the powder feeding roller; and the outer end surface of the contact portion of the second contact portion contacts the circumferential surface of the developing roller.

[0012] Furthermore, the conductive member body is provided with a first extension portion and a first base portion, one end of the first extension portion extends from the conductive member body in a second direction opposite to the first direction, and the other end of the first extension portion is connected to the first base portion.

[0013] Furthermore, the first base portion has four surfaces, wherein the first surface is connected to the first extension portion, the second surface is connected to the first contact portion, and the third surface and the fourth surface are provided with a clamping portion.

[0014] Furthermore, the conductive member body is provided with a second extension portion and a second base portion, one end of the second extension portion extends from the conductive member body in a second direction opposite to the first direction, and the other end of the second extension portion is connected to the second base portion.

[0015] Furthermore, the second base portion has four surfaces, wherein a first surface is connected to the second extension portion, and a second surface is connected to the second contact portion.

[0016] Furthermore, the conductive member further includes a first mounting portion and a second mounting portion, the first mounting portion is located at the first contact portion, and the second mounting portion is located at the second contact portion.

[0017] Furthermore, the third contact portion has a mounting hole.

[0018] Furthermore, the conductive member further includes a third mounting portion, which is located on the conductive member body and close to the third contact portion.

[0019] An embodiment of the present utility model also provides a bracket, which is adapted to the conductive member as mentioned above, and the bracket includes: a bracket body, a first positioning portion, extending along the bracket body in the second direction, which has a first recess to cooperate with the first mounting portion for installation and positioning; a second positioning portion, extending along the bracket body in the second direction, which has a second recess to cooperate with the second mounting portion for installation and positioning; a powder feed roller positioning portion to position the powder feed roller; and a developing roller positioning portion to position the developing roller.

[0020] Furthermore, the bracket also includes a third recess to cooperate with the third mounting portion for installation and positioning.

[0021] Furthermore, the bracket is made of insulating material.

[0022] An embodiment of the present utility model further provides a processing box, comprising a shell, on which the above-mentioned bracket and the above-mentioned conductive member are mounted.

[0023] Therefore, the conductive part, bracket and processing box provided by the embodiment of the utility model can facilitate the assembly workers to quickly install the conductive part on the bracket through the integrated first contact part, second contact part and third contact part, and the conductive part can be installed in the appropriate position through multiple installation parts, which can prevent the occurrence of wrong installation or missing installation and ensure accurate positioning. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for describing the embodiments.

[0025] Figure 1 A schematic structural diagram of a processing box in the prior art;

[0026] Figure 2 A schematic structural diagram of a processing cartridge provided in one embodiment of the present utility model;

[0027] Figure 3 A partial exploded view of a process cartridge provided by one embodiment of the present utility model;

[0028] Figure 4A schematic diagram of the structure of the conductive member and the bracket installation process provided in one embodiment of the present utility model;

[0029] Figure 5 A schematic structural diagram of a conductive member provided in one embodiment of the present utility model (I);

[0030] Figure 6 A schematic diagram of the structure of a conductive member provided in one embodiment of the present utility model (II);

[0031] Figure 7 A partial cross-sectional view of a process cartridge according to an embodiment of the present invention (1);

[0032] Figure 8 Partial cross-sectional view (2) of a processing box provided in one embodiment of the present utility model. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0034] It will be understood that when used in this specification and the appended claims, the terms “comprises” and “comprising” indicate the presence of described features, integers, steps, operations, elements and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof.

[0035] It should also be understood that the terms used in this utility model specification are only for the purpose of describing specific embodiments and are not intended to limit the utility model. As used in this utility model specification and the appended claims, the singular forms "a", "an" and "the" are intended to include plural forms unless the context clearly indicates otherwise.

[0036] It should be further understood that the term “and / or” used in the present specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0037] It should be further understood that the first direction and the second direction used in the present utility model specification and the appended claims are the left and right directions of the processing box, the third direction and the fourth direction are the front and back directions of the processing box, and the fifth direction and the sixth direction are the up and down directions of the processing box.

[0038] like Figure 2-3 As shown, an embodiment of the present invention provides a processing box, which can be detachably installed in an image forming device (not shown), and the processing box includes a shell, a powder feeding roller, a developing roller, a scraper, a photosensitive drum, a bracket and a conductive member.

[0039] The powder feed roller, developing roller, and scraper are all mounted parallel to each other within the housing via a bracket. These rollers are connected to a conductive member that transmits current from the image forming device to the rollers, developing roller, and scraper, enabling them to function properly. The powder feed roller and developing roller are capable of rotating about their respective axes.

[0040] The powder feeding roller serves as a developer carrier, and the developer in the storage device (not shown) in the processing box can be supplied to the surface of the photosensitive drum. The storage device is used to store the developer to supply the developer to the surface of the photosensitive drum as an image carrier in the image forming device, thereby developing the electrostatic latent image formed on the surface of the photosensitive drum.

[0041] In addition, the developing roller is located at the opening of the storage in the process box, and can rotate along its own rotation axis to attach the developer in the storage to itself and transfer it to the powder feeding roller.

[0042] The scraper is a metal plate-like component extending axially parallel to the powder feed roller and the developing roller. It has a conductive function and can scrape the developer on the powder feed roller to ensure that the developer on the powder feed roller can remain flat, thereby correspondingly reducing the occurrence of image failures such as image irregularities caused by uneven developer on the photosensitive drum.

[0043] like Figure 3-4 As shown, an embodiment of the utility model further provides a bracket, which includes: a bracket body, a first positioning portion, which has a first recess to cooperate with the first mounting portion for installation and positioning; a second positioning portion, which has a second recess to cooperate with the second mounting portion for installation and positioning; a developing roller positioning portion to position the developing roller; and a powder feeding roller positioning portion to position the powder feeding roller.

[0044] Among them, the developing roller positioning portion and the powder feeding roller positioning portion are located on the bracket body and extend along the bracket body in the first direction. The developing roller positioning portion and the powder feeding roller positioning portion both have holes that can fix the developing roller and the powder feeding roller. The distance between the developing roller positioning portion and the powder feeding roller positioning portion is set to ensure that the developing roller and the powder feeding roller are in contact when they are installed on the developing roller positioning portion and the powder feeding roller positioning portion, that is, the developing roller can smoothly attach the developer to the powder feeding roller.

[0045] In addition, the first positioning portion and the second positioning portion extend in the second direction along the bracket body, and the first positioning portion and the second positioning portion respectively have a first recess and a second recess. The first positioning portion with the first recess and the second positioning portion with the second recess can be used to fix part of the conductive part to ensure that the conductive part will not be displaced after installation. The specific structure of the conductive part will be described in detail later.

[0046] The bracket further includes at least one third recess. In this embodiment, there are two third recesses, which are respectively arranged at positions of the bracket body where the conductive member is installed.

[0047] The bracket body is also provided with two sockets, which are respectively located on the first positioning part and the second positioning part. Part of the conductive member can pass through the sockets and contact the shafts of the developing roller and the powder feeding roller.

[0048] In order to ensure that the bracket does not pick up or share the current and voltage on the conductive parts, and to ensure that only the conductive parts can receive the current and voltage from the electrical contacts (not shown) of the image forming device, the bracket is made of insulating materials. Specific insulating materials include but are not limited to polytetrafluoroethylene (PTFE), polyethylene (PE), polystyrene (PS) and polycarbonate (PC).

[0049] like Figure 4-6 As shown, the conductive part includes: a conductive part body, which is roughly U-shaped, extending from one end of the conductive part body of the U-shaped structure toward the first direction to form a second contact part, and the second contact part can contact the circumferential surface of the developing roller; extending from the other end of the conductive part body of the U-shaped structure toward the first direction to form a third contact part, and the third contact part can contact the end of the scraper parallel to the first direction; extending from a position of the conductive part body of the U-shaped structure close to the second contact part toward the first direction to form a first contact part, and the first contact part can contact the circumferential surface of the powder feeding roller.

[0050] It should be noted that in some embodiments, to enable the first and second contact portions to cooperate with the aforementioned bracket, a first extension portion and a first base portion are provided on the first contact portion, wherein one end of the first extension portion extends from the conductive member body in a second direction, and the other end of the first extension portion is connected to the first base portion. The first base portion is capable of contacting an electrical contact (not shown) of an image forming device to direct the current from the electrical contact of the image forming device to the conductive member. A second extension portion and a second base portion are provided on the second contact portion, wherein one end of the second extension portion extends from the conductive member body in a second direction opposite to the second direction, and the other end of the second extension portion is connected to the second base portion.

[0051] like Figure 4-6 As shown, in order to ensure that the first contact portion and the second contact portion on the conductive part can be firmly mounted on the bracket to prevent them from falling off during assembly or operation on the conductive part, a first mounting portion is provided on the first contact portion and a second mounting portion is provided on the second contact portion, and the first mounting portion and the second mounting portion are respectively mounted to the first recess and the second recess of the above-mentioned bracket to fix the first contact portion and the second contact portion in the conductive part to ensure stable installation of the conductive part.

[0052] like Figure 7-8 As shown, in order to ensure that the first and second contact portions can maintain contact with the powder feed roller and the developing roller for a long time and prevent the first and second contact portions from poorly contacting the powder feed roller and the developing roller due to excessive working time, the contact portion of the first contact portion with the powder feed roller and the contact portion of the second contact portion with the developing roller form a first angle and a second angle in the first direction, so that the outer end surface of the contact portion of the first contact portion and the outer end surface of the contact portion of the second contact portion contact the circumferential surface of the powder feed roller and the circumferential surface of the developing roller in an inclined manner, thereby ensuring that the first and second contact portions can maintain stable contact with the powder feed roller and the developing roller. The angles formed by the first and second angles in the first direction of the contact portion of the first contact portion and the contact portion of the second contact portion are 70 to 85 degrees to ensure better contact with the circumferential surface of the powder feed roller and the circumferential surface of the developing roller.

[0053] like Figure 4-8 As shown, in order to further prevent the first contact portion from being disengaged from the first positioning portion of the bracket, at least two groups of clamping portions are provided on the first base portion, and the two groups of clamping portions can clamp the side edges on the first positioning portion so that the first contact portion connected to the first base portion can be fixed in a suitable position.

[0054] like Figure 4-6 As shown, the third contact portion on the conductive part has a mounting hole, which is roughly circular. The scraper also has a hole-like structure similar to the mounting hole. After the mounting hole of the third contact portion is aligned with the hole-like structure on the scraper, the third contact portion of the conductive sheet is fixed to the scraper by means of bolts or other fixing methods to ensure that the third contact portion will not detach from the scraper.

[0055] like Figure 4 As shown, in order to prevent the conductive part from detaching from the bracket and to further make the conductive part fit on the bracket, a third mounting portion is also provided on the bracket body, and the third mounting portion can cooperate with the above-mentioned third recess. In this embodiment, the third mounting portion is two and is respectively installed on the two third recesses to ensure that the conductive part can fit the bracket.

[0056] During the assembly of the conductive member, the conductive member is first folded into the following shape: Figure 5-6The first and second contact portions of the conductive member are then mounted to the first and second positioning portions, respectively. The first mounting portion of the first contact portion is aligned with the first recess of the first positioning portion, and the second mounting portion of the second contact portion is aligned with the second recess of the second positioning portion. Simultaneously, the contact portion of the first and second contact portions are inserted along the receptacles of the first and second positioning portions. The third mounting portion of the third contact portion is snapped into the third recess. At this point, the bracket with the conductive member is mounted to the side of the process cartridge housing. The contact portion of the first contact portion contacts the powder feed roller, the contact portion of the second contact portion contacts the developer roller, and the third contact portion is in contact with the scraper, completing the installation of the conductive member.

[0057] The conductive part, bracket and processing box of the present invention can facilitate the assembly workers to quickly install the conductive part on the bracket through the first contact part, the second contact part and the third contact part which are integrally arranged, and the conductive part can be installed in the appropriate position through multiple installation parts, which can prevent the occurrence of wrong installation or missing installation and ensure accurate positioning.

[0058] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and such modifications or substitutions are intended to be within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope of protection of the claims.

Claims

1. A conductive member, detachably mounted in a processing box via a bracket, characterized in that: The conductive member comprises: Conductive member body; a first contact portion extending from the conductive member body along a first direction and contacting the powder feeding roller; a second contact portion extending from the first end of the conductive member body along a first direction and contacting the developing roller; a third contact portion extending from the conductive member body toward the second end along the first direction and contacting the scraper; The first contact portion, the second contact portion and the third contact portion are integrally formed.

2. The conductive member according to claim 1, wherein: The first contact portion is in circumferential contact with the powder feeding roller, and The second contact portion contacts the developing roller in a circumferential direction.

3. The conductive member according to claim 2, wherein: The contact portion of the first contact portion and the powder feeding roller forms a first angle with the first direction, and A contact portion of the second contact portion contacting the developing roller forms a second angle with the first direction.

4. The conductive member according to claim 3, characterized in that The first angle and the second angle are both 70 to 85 degrees.

5. The conductive element according to any one of claims 2 to 4, characterized in that: The outer end surface of the contact portion of the first contact portion is in contact with the circumferential surface of the powder feeding roller; and An outer end surface of a contact portion of the second contact portion contacts a circumferential surface of the developing roller. The conductive member according to claim 1 , wherein: The conductive member body is provided with a first extension portion and a first base portion. One end of the first extension portion extends from the conductive member body in a second direction opposite to the first direction, and the other end of the first extension portion is connected to the first base portion.

7. The conductive member according to claim 6, characterized in that The first base portion has four surfaces, wherein the first surface is connected to the first extension portion, the second surface is connected to the first contact portion, and the third surface and the fourth surface are provided with holding portions.

8. The conductive member according to claim 1, wherein: The conductive member body is provided with a second extension portion and a second base portion. One end of the second extension portion extends from the conductive member body in a second direction opposite to the first direction, and the other end of the second extension portion is connected to the second base portion.

9. The conductive member according to claim 8, characterized in that: The second base portion has four surfaces, wherein a first surface is connected to the second extension portion, and a second surface is connected to the second contact portion.

10. The conductive member according to claim 1, wherein The conductive member further includes a first mounting portion and a second mounting portion, wherein the first mounting portion is located at the first contact portion, and the second mounting portion is located at the second contact portion.

11. The conductive member according to claim 1, wherein The third contact portion has a mounting hole.

12. The conductive member according to claim 1, wherein The conductive member further includes a third mounting portion, which is located on the conductive member body and close to the third contact portion.

13. A bracket adapted to fit the conductive member according to claims 1-11, characterized in that: The bracket comprises: Bracket body, A first positioning portion extends along the bracket body in a second direction and has a first recess to cooperate with the first mounting portion for installation and positioning; A second positioning portion extends along the bracket body in a second direction and has a second recess to cooperate with the second mounting portion for mounting and positioning; A powder feeding roller positioning portion for positioning the powder feeding roller; The developing roller positioning portion is used to position the developing roller.

14. The bracket according to claim 13, wherein: The bracket also includes a third recess to cooperate with the third mounting portion for installation and positioning.

15. The bracket according to claim 13, wherein: The bracket is made of insulating material.

16. A process cartridge comprising a housing, characterized in that: The housing is mounted with a bracket according to claims 13-15 and a conductive member according to claims 1-12.

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